crc32: Use the crc.h header for crc functions

Drop inclusion of crc.h in common.h and use the correct header directly
instead.

With this we can drop the conflicting definition in fw_env.h and rely on
the crc.h header, which is already included.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

lib/crc32.c

@@ -10,6 +10,7 @@
 
 #ifdef USE_HOSTCC
 #include <arpa/inet.h>
+#include <u-boot/crc.h>
 #else
 #include <common.h>
 #include <efi_loader.h>